one of the biggest issues facing us right now is global warming

8/8/2019 One of the Biggest Issues Facing Us Right Now is Global Warming

http://slidepdf.com/reader/full/one-of-the-biggest-issues-facing-us-right-now-is-global-warming 1/7

One of the biggest issues facing us right now is global warming. Its effects on animals and onagriculture are indeed frightening, and the effects on the human population are even scarier. The

facts about global warming are often debated, but unfortunately, even if we disagree about thecauses, global warming effects are real, global, and measurable. The causes are mainly from us,

the human race, and the effects on us will be severe.

Global Warming Effects and Causes: A Top 10 List

1. Global Warming Cause: Carbon dioxide emissions from fossil fuel burning power plants

Our ever increasing addiction to electricity from coal burning power plants releases enormousamounts of carbon dioxide into the atmosphere. 40% of U.S. CO2 emissions come from

electricity production, and burning coal accounts for 93% of emissions from the electric utilityindustry [EPA, pg. 10]. Every day, more electric gadgets flood the market, and without

widespread alternative energy sources, we are highly dependent on burning coal for our personaland commercial electrical supply.



2. Global Warming Cause: Carbon dioxide emissions from burning gasoline for

transportation

Our modern car culture and appetite for globally sourced goods is responsible for about 33% of emissions in the U.S. [EPA pg. 8] With our population growing at an alarming rate, the demand

for more cars and consumer goods means that we are increasing the use of fossil fuels for

transportation and manufacturing. Our consumption is outpacing our discoveries of ways tomitigate the effects, with no end in sight to our massive consumer culture.

3. Global Warming Cause: Methane emissions from animals, agriculture such as rice

paddies, and from Arctic seabeds



Methane is another extremely potent greenhouse gas, ranking right behind CO2. When organicmatter is broken down by bacteria under oxygen-starved conditions (anaerobic decomposition)

as in rice paddies, methane is produced. The process also takes place in the intestines of herbivorous animals, and with the increase in the amount of concentrated livestock production,

the levels of methane released into the atmosphere is increasing. Another source of methane is

methane clathrate, a compound containing large amounts of methane trapped in the crystalstructure of ice. As methane escapes from the Arctic seabed, the rate of global warming willincrease significantly.

4. Global Warming Cause: Deforestation, especially tropical forests for wood, pulp, and

farmland

The use of forests for fuel (both wood and for charcoal) is one cause of deforestation, but in thefirst world, our appetite for wood and paper products, our consumption of livestock grazed on

former forest land, and the use of tropical forest lands for commodities like palm oil plantationscontributes to the mass deforestation of our world. Forests remove and store carbon dioxide from

the atmosphere, and this deforestation releases large amounts of carbon, as well as reducing the

amount of carbon capture on the planet.



5. Global Warming Cause: Increase in usage of chemical fertilizers on croplands

In the last half of the 20th century, the use of chemical fertilizers (as opposed to the historical use

of animal manure) has risen dramatically. The high rate of application of nitrogen-rich fertilizershas effects on the heat storage of cropland (nitrogen oxides have 300 times more heat-trapping

capacity per unit of volume than carbon dioxide) and the run-off of excess fertilizers createsµdead-zones¶ in our oceans. In addition to these effects, high nitrate levels in groundwater due to

over-fertilization are cause for concern for human health.



6. Global Warming Effect: Rise in sea levels worldwide

Scientists predict an increase in sea levels worldwide due to the melting of two massive icesheets in Antarctica and Greenland, especially on the East coast of the U.S. However, many

nations around the world will experience the effects of rising sea levels, which could displace

millions of people. One nation, theM

aldives, is already looking for a new home, thanks to risingsea levels.

7. Global Warming Effect: More killer storms

The severity of storms such as hurricanes and cyclones is increasing, and research published in Nature found:

³Scientists have come up with the firmest evidence so far that global warming will significantlyincrease the intensity of the most extreme storms worldwide. The maximum wind speeds of the

strongest tropical cyclones have increased significantly since 1981, according to research published in Nature this week. And the upward trend, thought to be driven by rising ocean

temperatures, is unlikely to stop at any time soon.´



8. Global Warming Effect: Massive crop failures

According to recent research, there is a 90% chance that 3 billion people worldwide will have tochoose between moving their families to milder climes and going hungry due to climate change

within 100 years.

³Climate change is expected to have the most severe impact on water supplies. ³Shortages infuture are likely to threaten food production, reduce sanitation, hinder economic development

and damage ecosystems. It causes more violent swings between floods and droughts.´" ± Guardian: Global warming causes 300,000 deaths a year

9. Global Warming Effect: Widespread extinction of species



According to research published in Nature, by 2050, rising temperatures could lead to theextinction of more than a million species. And because we can¶t exist without a diverse

population of species on Earth, this is scary news for humans.

³Climate change now represents at least as great a threat to the number of species surviving on

Earth as habitat-destruction and modification.´ Chris Thomas, conservation biologist at theUniversity of Leeds

10. Global Warming Effect: Disappearance of coral reefs

A report on coral reefs from WWF says that in a worst case scenario, coral populations will

collapse by 2100 due to increased temperatures and ocean acidification. The µbleaching¶ of corals from small but prolonged rises in sea temperature is a severe danger for ocean ecosystems,

and many other species in the oceans rely on coral reefs for their survival.

³Despite the oceans¶s immensity ² 71 per cent of the Earth¶s surface with an average depth of almost 4km (2½m) ² there are indications that it is approaching its tipping point. For reefs,

warming waters and acidification are closing in like a pair of jaws that threaten to make them thefirst global ecosystem to disappear.´ ± Times Online: 21st-century Noah¶s Ark needed to save

coral reefs from extinction

one of the biggest issues facing us right now is global warming

Documents